Which concept relates to the arrangement of elements to achieve visual harmony?

The concept that relates to the arrangement of elements to achieve visual harmony is the principles of design. These principles include balance, contrast, emphasis, movement, pattern, rhythm, and unity. They guide artists and designers in organizing various elements in a work of art, ensuring that these components come together cohesively to create an aesthetically pleasing and functional piece.

When elements are arranged thoughtfully according to these principles, visual harmony is achieved, making the artwork more engaging and effective in conveying its intended message or emotion. For example, balance helps to distribute visual weight evenly, while unity ensures that all components contribute to a cohesive whole.

The other concepts, such as saturation, scale, and subtractive color, focus on specific aspects of art rather than the overall arrangement and organization of elements in a composition. Saturation relates to the intensity of color, scale deals with the size of objects in relation to one another, and subtractive color refers to the mixing of pigments, none of which encompass the broader principles governing visual harmony in design.